linux-kernel - Re: [PATCH 05/12] regulator: Introduce tps68470-regulator driver

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Message-ID: <YWmwZJvDYjPWJdb4@sirena.org.uk>
Date:   Fri, 15 Oct 2021 17:46:28 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Hans de Goede <hdegoede@...hat.com>
Cc:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Mark Gross <markgross@...nel.org>,
        Andy Shevchenko <andy@...radead.org>,
        Daniel Scally <djrscally@...il.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, Len Brown <lenb@...nel.org>,
        linux-acpi@...r.kernel.org, platform-driver-x86@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Kate Hsuan <hpa@...hat.com>, linux-media@...r.kernel.org,
        linux-clk@...r.kernel.org
Subject: Re: [PATCH 05/12] regulator: Introduce tps68470-regulator driver

On Mon, Oct 11, 2021 at 01:43:40PM +0200, Hans de Goede wrote:

> To make this work when everything is build as a module patch 12/12
> adds the following to the PMIC-MFD-driver:

> MODULE_SOFTDEP("pre: clk-tps68470 tps68470-regulator");

> This will make modprobe load the clk and regulator drivers
> before it loads the main/MFD tps68470 driver.

I feel nervous about this being reliable with all userspaces - IIRC
there was an alternative implementation of the modules stuff in
userspace and someone could always be doing insmod.  OTOH without better
in kernel dependency management and/or more standards based firmware
interfaces I guess we're stuck with this.

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